123101255042 has 16 divisors (see below), whose sum is σ = 185190284664. Its totient is φ = 61371360000.

The previous prime is 123101255023. The next prime is 123101255071. The reversal of 123101255042 is 240552101321.

It can be written as a sum of positive squares in 4 ways, for example, as 44724213361 + 78377041681 = 211481^2 + 279959^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1205792 + ... + 1303892.

Almost surely, 2^123101255042 is an apocalyptic number.

123101255042 is a deficient number, since it is larger than the sum of its proper divisors (62089029622).

123101255042 is a wasteful number, since it uses less digits than its factorization.

123101255042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99925.

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 123101255042 its reverse (240552101321), we get a palindrome (363653356363).

The spelling of 123101255042 in words is "one hundred twenty-three billion, one hundred one million, two hundred fifty-five thousand, forty-two".